Abstract: A protective helmet includes an outer shell, an inner liner provided within the shell, a chinstrap coupled to the shell including a chin cup adapted to contact and protect the wearer's chin, and decoupling means that decouple the shell from the chin cup to enable the shell to rotate relative to the head when the helmet is worn and the chinstrap is securely fastened about the chin.
Abstract: A protective helmet includes an outer shell, an inner liner provided within the shell, a chinstrap coupled to the shell including a chin cup adapted to contact and protect the wearer's chin, and decoupling means that decouple the shell from the chin cup to enable the shell to rotate relative to the head when the helmet is worn and the chinstrap is securely fastened about the chin.
Abstract: A k-space trajectory measurement method is disclosed with applications in magnetic resonance spectroscopy. Phase shift values associated with magnetic resonance signals from multiple sample regions are compared to rapidly extract k-space trajectory measurements. The efficiency of the present invention for image gradients to be measured immediately before test imaging.
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